Also, for simple cases, I often make macros like the following, in a
convenient MACLIB (they cannot be in-line):
MACRO
&LAB LGFI &R1,&I2 LOAD IMMEDIATE
.*
.* UNTIL LGFI IS ALLOWED, THIS MACRO WILL FAKE IT THE OLD-
.* FASHIONED WAY.
.*
&LAB LGF &R1,=A(&I2) LOAD
MEND
At a level where LGFI is valid, the macro isn't even looked for, but
on back-levels it brings it in. Automatic upgrade without even having
to do your own test.
I'm well aware that some new instructions cannot be easily "faked" in
a sensible general way. Just another way to do it when it's all you
need.
sas
